Computer Programming 1

Question 1

Used to specify the set of values and their operations. The values have particular data types because they are stored in memory of the same format and have the same operations defined for them.

Answer 1

Data type

Question 2

The fundamental data types in Java. These are predefined data types by the language and named by a keyword.

Answer 2

Primitive data types

Question 3

8-bit signed integer (0)

Answer 3

Byte

Question 4

16-bit signed integer (0)

Answer 4

Short

Question 5

32-bit signed integer (0)

Answer 5

Int

Question 6

64-bit signed integer (0L)

Answer 6

Long

Question 7

Single-precision 32-bit IEEE (0.0f)

Answer 7

Float

Question 8

Double-precision 64-bit IEEE (0.0d)

Answer 8

Double

Question 9

One bit information (false)

Answer 9

Boolean

Question 10

Single 16-bit Unicode character (‘\u0000’)

Answer 10

Char

Question 11

A name for a memory location that stores a specific value, such as numbers and letters.

Answer 11

Variable

Question 12

A memory location whose value cannot be changed during program execution.

Answer 12

Constant

Question 13

Keyword used to specify that the value stored in the variable_name is fixed and cannot be changed.

Answer 13

final

Question 14

Refers to converting a value from a specific type to a variable of another type.

Answer 14

Type casting

Question 15

The conversion of the lower precision data type to a value of a higher precision data type.

Answer 15

Widening conversion (implicit casting)

Question 16

The conversion of a higher precision data type into a blue of a lower precision data type.

Answer 16

Narrowing conversion (explicit casting)

Question 17

These symbols tell the compiler or interpreter of the program to perform a specific mathematical, relational, or logical operation and produce the final result.

Answer 17

Operators

Question 18

Used to perform basic mathematical operations on numerical values.

Answer 18

Arithmetic operators

Question 19

+

Answer 19

Addition

Question 20

-

Answer 20

Subtraction

Question 21

*

Answer 21

Multiplication

Question 22

/

Answer 22

Division

Question 23

%

Answer 23

Modulus

Question 24

Occurs when either or both of the operands are floating-point values and the result is a floating-point value.

Answer 24

Floating-point division

Question 25

Occurs when either or both of the operands are integers. The result is an integer, and any factorial part of the result is lost.

Answer 25

Integer division

Question 26

Are used to evaluate the relation between the operands and generate a decision on that base.

Answer 26

Relational operators

Question 27

>

Answer 27

Greater than

Question 28

>=

Answer 28

Greater than or equal

Question 29

<

Answer 29

Less than

Question 30

<=

Answer 30

Less than or equal

Question 31

Return a Boolean value based on the Boolean result of the given expressions.

Answer 31

Logical operators

Question 32

&&

Answer 32

Logical AND operator

Question 33

||

Answer 33

Logical OR operator

Question 34

^

Answer 34

Bitwise and Logical XOR operator

Question 35

!

Answer 35

Unary NOT operator

Question 36

Are used to assign values to a variable.

Answer 36

Assignment operators

Question 37

It is a collection of rules that specifies which operations need to be performed in an expression.

Answer 37

Order of precedence

Question 38

A construct made up of variables and operators that evaluates to a single value.

Answer 38

Expression

Question 39

If all operands in an expression are integers and the expression returns an integer type value.

Answer 39

Integral expression

Question 40

If all operands in an expression are floating-point numbers, and the expression returns a floating-point value.

Answer 40

Floating-point expression

Question 41

An expression that has operands of different data types.

Answer 41

Mixed expression

Question 42

An expression that returns a Boolean value when evaluated.

Answer 42

Logical expression

Question 43

The methods of this class are used to read data from the standard to input device and store data into variables.

Answer 43

Scanner

Question 44

Declares an object of Scanner type named input.

Answer 44

Scanner input

Question 45

Creates a Scanner object connected to the System.in property.

Answer 45

new Scanner (System.in)